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-rw-r--r--test/CodeGen/AMDGPU/vtx-schedule.ll18
1 files changed, 18 insertions, 0 deletions
diff --git a/test/CodeGen/AMDGPU/vtx-schedule.ll b/test/CodeGen/AMDGPU/vtx-schedule.ll
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index 0000000000000..912e258ebb835
--- /dev/null
+++ b/test/CodeGen/AMDGPU/vtx-schedule.ll
@@ -0,0 +1,18 @@
+; RUN: llc < %s -march=r600 -mcpu=redwood | FileCheck %s
+
+; This test is for a scheduler bug where VTX_READ instructions that used
+; the result of another VTX_READ instruction were being grouped in the
+; same fetch clasue.
+
+; CHECK: {{^}}test:
+; CHECK: Fetch clause
+; CHECK: VTX_READ_32 [[IN0:T[0-9]+\.X]], [[IN0]], 0
+; CHECK: Fetch clause
+; CHECK: VTX_READ_32 [[IN1:T[0-9]+\.X]], [[IN1]], 0
+define void @test(i32 addrspace(1)* nocapture %out, i32 addrspace(1)* addrspace(1)* nocapture %in0) {
+entry:
+ %0 = load i32 addrspace(1)*, i32 addrspace(1)* addrspace(1)* %in0
+ %1 = load i32, i32 addrspace(1)* %0
+ store i32 %1, i32 addrspace(1)* %out
+ ret void
+}